An allene-doped liquid argon ionization chamber with 48 mm x 48 mm x 40 mm
sensitive volume has been constructed for precise energy measurement of hea
vy ions at around 100 MeV/n. An energy resolution of 0.6%-0.7% (FWHM) was a
chieved for Ca and Ar ions both at 78 MeV/n. (C) 1999 Elsevier Science B.V.
All rights reserved.